Plaster mixing machine



(No Model.) 3 Sheets-Sheet I. G. WEST.

PLASTER MIXING MACHINE.

Patented Nov. 18, 1888.

' .Illlllllllllllllllllllll lllilllllllllllllllllll I (No Model.) 3 Sheets-Sheet 3. G. WEST.

PLASTBR MIXING MAGHINE.

No. 392,652. Paitented Nov. 13, 1888.

x 1 N E v 1 @Jvdmeowo- I/I/I/I/ m K a W g 'gw Henna NITED STATES GEORGE WEST, OF SYRACUSE, NEI V YORK.

PLASTER=MIXING MACHINE.

:ESPECIPICATION forming part of Letters Patent No. 392,652, dated November 13, 1888.

Application filed November 1], 1887. Serial No. 254.945. (No modeld- To all whom it may concern.-

Be it known that I, GEORGE WVEsT, of Syracuse, county of Onondaga, in the State of New York, a citizen of the United States, have invented certain new and useful Improvements in Mixing-Machines, of which the followingis a specification, reference being bad to the accompanying drawings, in which-- Figure 1 is a side elevation of my machine. Fig. 2 is a central vertical longitudinal section thereof. Fig. 3 is an end elevation ofsame; and Fig. 4, a vertical transverse section looking toward the end upon which the drivinggear, 850., is mounted.

Similar letters and figures of reference indicate corresponding parts throughout the several views.

My invention relates to machines for mixing dry ingredients or materials; and my object is to produce a machine which will do its work perfectly and quickly and will deposit the mixture in bags without any handling of the material except putting it into the feedhopper.

It consists in the novel construction and arrangement of the component elements, as hereinafter described, and specifically set forth in the claim hereto annexed.

It is constructed as follows:

A isa stationary cylindersupported horizontally upon the legs 1.

B is the mixingcylinder inclosed within cylinder A.

O is a feed-hopper outside of the cylinder A and communicating with the interior of cylinder B through opening 2. The slide 3 regulates the feed, and it is operated by the rack 4 on lower face of slide and the pinion 5 engaging with the rack, the pinion-shaft being provided with an ordinaryhand-wheel (or handle) outside of the hopper to rotate the pinion.

D is the main shaft,suitably mounted in bearings and having 011 one end the screw-conveyer 6 and upon the other end the necessary gearing, pulleys, belt, and clutch mechanism, mounted, substantially as shown in Figs. 2 and 3, to rotate the main or beater shaft in one direction and the revolving cylinder in an opposite direction, as indicated by arrows in Figs. 3 and 4 of the drawings.

Upon the end of the mixing cylinder I secure the sleeve 7, through which the shaft D passes, and upon the aforesaid sleeve mount the gear 8, and the rotation of this gear rotates the cylinder through its belt and gear connection to the main drive-shaft.

Within the cylinder B and upon the main shaft I adjustably secure the screw arms or beaters 9 10 alternately, so that the screw ac tion of beater-s 9 is reversed by that of boaters 10, thus more throrougly stirring, disintegrate ing, and mixing the materials. Ialso provide the inner surface of the cylinder B with the ordinary longitudinal shelves or wings, 11, which carry up material from the bottom and shower it down onto the top of the mixture and heaters, thus aiding in the mixing. I also provide the cylinders A B with man-holes in the usual manner. I also provide cylinder B with one or more spring doors or gates,12,open ing inwardly and arranged longitudinally or otherwise, and to operate them I pivotally conneat to cylinder A the curved trackway l3,the

free end of which is beveled, as shown; and 14 is a hand-lever pivotally mounted, its inner end bearing against or connected to the track way.

On the outside of the cylinder B, I mount a series of buckets, 15, which rotate with it and the extremities of which are contiguous to the inner surface of cylinder A, which scrape and carry upward the deposited material lying on the bottom of the cylinder A as they revolve around, and as soon as said buckets pass by the perpendicular center ofthe cylinder the carried material is precipitated into the trough E, (hereinafter described,) said buckets being mounted longitudinally upon the outersurface ofthe rotating cylinder B, substantially as shown.

E is a trough opening into the cylinder A to receive the mixed material, provided with a series of openings, 16, in its bottom, and 17 is a sliding frame connected to the operating rod 18, upon which frame I place the cut-offs 19, (shown of pyramidal form,) using one-half as many cut-oil's as openings, and bag-spouts 20 connected to them, so that one-half of the openings are always open, and when one set of bags is full I push in or pull out the slide and cover those and deflect the material into the other set of openings.

By the operation of the lever 14 I raise or depress the trackway 13, so that the pivoted dog 26 is thrown into or out of engagei'nent with the gate 12, and when in engagement it opens the gate so long as the dog is in contact with the trackway, as shown in Fig. 4 of the drawings. The aforementioned operating-lever 14 is, when thrown above or below ahorizontal line, held in proper position by the weight or pressure of the pivoted traokway upon its engaging end.

It will be observed from the foregoing that no stoppage in the revolution of the cylinder B is necessitated in order to allow of the precipitation ot'themixed materialinto thetrough, &c., and therefore the operation of my machine is (aside from the feeding of the unmixed ingredients into the hopper) practically continuous.

It will further be observed that by throwing the mechanism for rotating the cylinder out of gear I can still rotate the wings or blades, and the rotation of said wings with the gates open will blow out and clean out the mixingoylinder in case I desire to change the ingredients of the mixture.

My improved mixing-machine is,primarily, 2g intended to operate upon wall-plaster in a dry state.

What I claim as my invention, and desire to secure by Letters Patent, is-- In a mixing-machine, the combination of 0 the rotating beater-shaft, a rotating cylinder having a spring-door,and a pivoted dog engaging said door mounted on said cylinder, an inclosing stationary cylinder, an adjustable trackway pivoted at one edge to the stationary 3 5 cylinder, and a lever pivoted to the stationary cylinder and engaging the free edge of the said traokway for the purpose of adjusting the same, substantially as described.

In witness whereof I have hereunto set my 40 hand this 7th day of May, 1887.

GEORGE WEST. [n s.]

In presence of WM. 0. RAYMOND, PARKE W. WIOKS. 

